Error in importing libraries (beginner question)

hello, i’m fairly new GNU Radio and it is confusing me a bit. I have
succeeded (i think) in installing GNU radio on my ubuntu 7.10 computer.
then I quickly encountered an error on the first line of my code.
Forgive me
if this question is too simple, i am really a novice in this whole
This is the error message:

from gnuradio import gr
Traceback (most recent call last):
File “”, line 1, in
File “/usr/local/lib/python2.5/site-packages/gnuradio/gr/”,
line 43, in
from gnuradio_swig_python import *
line 24, in
from gnuradio_swig_py_general import *
line 6, in
import _gnuradio_swig_py_general
undefined symbol: _Z24gr_make_ofdm_bpsk_mapperjjj

i tried reinstalling the gnuradio and usrp packages but this error still
comes up. Any ideas?

View this message in context:
Sent from the GnuRadio mailing list archive at

This forum is not affiliated to the Ruby language, Ruby on Rails framework, nor any Ruby applications discussed here.

| Privacy Policy | Terms of Service | Remote Ruby Jobs